question

scfoster avatar image

Internal vs External BMS pros and cons

Interested in thoughts regarding Victron batteries with external BMS vs integrated BMS batteries like Battle Born or Victron.

Thanks for Steve Mitchell for his detailed information on a Victron system install.

Have a 2001 Beneteau 361 upgrading from the original Xantrex Freedom 20 to a LiFePO4 & Victron system.

What do you 'lose' or 'gain' by going with the integrated BMS batteries (Battle Born) vs the Victron with external BMS?

Lithium BatteryBMS
10 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Most batteries with internal BMS have a limited power.
e.g. the 200Ah Victron with internal BMS you have 70A charge/discharge current(100A 10sec peak) and with external BMS 200A recommended discharge(400A max) and 100A recommended charge(400A max) current.

If you only want to use small loads you should be fine with an internal BMS but if you need large loads you should use one with external BMS.

Share
10 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.